server/socket/image.C

/*
    CrossFire, A Multiplayer game for X-windows

    Copyright (C) 2001 Mark Wedel
    Copyright (C) 1992 Frank Tore Johansen

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

    The author can be reached via e-mail to <crossfire@schmorp.de>
*/

/** \file
 * Image related communication
 *
 *  \date 2003-12-02
 *
 * This file deals with the image related communication to the
 * client.  I've located all the functions in this file - this
 * localizes it more, and means that we don't need to declare
 * things like all the structures as globals.
 */

#include <global.h>
#include <sproto.h>

#define MAX_FACE_SETS   20  /**< Maximum number of image sets the program will handle */

/** Information about one image */
typedef struct FaceInfo
{

  uint8 *data;              /**< image data */
  uint16 datalen;           /**< length of the xpm data */
  uint32 checksum;          /**< Checksum of face data */
} FaceInfo;

/** Information about one face set */
typedef struct
{

  char *prefix;         /**< */
  char *fullname;

  uint8 fallback;       /**< faceset to use when an image is not found in this faceset */
  char *size;
  char *extension;
  char *comment;

  FaceInfo *faces;      /**< images in this faceset */
} FaceSets;

static FaceSets facesets[MAX_FACE_SETS];    /**< All facesets */

/**
 * Checks specified faceset is valid
 * \param fsn faceset number
 */
int
is_valid_faceset (int fsn)
{
  if (fsn >= 0 && fsn < MAX_FACE_SETS && facesets[fsn].prefix)
    return TRUE;
  return FALSE;
}

/**
 * Frees all faceset information
 */
void
free_socket_images (void)
{
  int num, q;

  for (num = 0; num < MAX_FACE_SETS; num++)
    {
      if (facesets[num].prefix)
        {
          for (q = 0; q < nrofpixmaps; q++)
            if (facesets[num].faces[q].data)
              free (facesets[num].faces[q].data);
          free (facesets[num].prefix);
          free (facesets[num].fullname);
          free (facesets[num].size);
          free (facesets[num].extension);
          free (facesets[num].comment);
          free (facesets[num].faces);
        }
    }
}

/**
 * This returns the set we will actually use when sending
 * a face.  This is used because the image files may be sparse.
 * This function is recursive.  imageno is the face number we are
 * trying to send
 *
 * If face is not found in specified faceset, tries with 'fallback' faceset.
 *
 * \param faceset faceset to check
 * \param imageno image number
 *
 */
static int
get_face_fallback (int faceset, int imageno)
{
  /* faceset 0 is supposed to have every image, so just return.  Doing
   * so also prevents infinite loops in the case if it not having
   * the face, but in that case, we are likely to crash when we try
   * to access the data, but that is probably preferable to an infinite
   * loop.
   */
  if (faceset == 0)
    return 0;

  if (!facesets[faceset].prefix)
    {
      LOG (llevError, "get_face_fallback called with unused set (%d)?\n", faceset);
      return 0;                 /* use default set */
    }
  if (facesets[faceset].faces[imageno].data)
    return faceset;
  return get_face_fallback (facesets[faceset].fallback, imageno);
}

/**
 * Checks fallback are correctly defined.
 * This is a simple recursive function that makes sure the fallbacks
 * are all proper (eg, the fall back to defined sets, and also
 * eventually fall back to 0).  At the top level, togo is set to MAX_FACE_SETS,
 * if togo gets to zero, it means we have a loop.
 * This is only run when we first load the facesets.
 */
static void
check_faceset_fallback (int faceset, int togo)
{
  int fallback = facesets[faceset].fallback;

  /* proper case - falls back to base set */
  if (fallback == 0)
    return;

  if (!facesets[fallback].prefix)
    {
      LOG (llevError, "Face set %d falls to non set faceset %d\n", faceset, fallback);
      abort ();
    }
  togo--;
  if (togo == 0)
    {
      LOG (llevError, "Infinite loop found in facesets. aborting.\n");
      abort ();
    }
  check_faceset_fallback (fallback, togo);
}

#define MAX_IMAGE_SIZE 10000

/**
 * Loads all the image types into memory.
 *
 *  This  way, we can easily send them to the client.  We should really do something
 * better than abort on any errors - on the other hand, these are all fatal
 * to the server (can't work around them), but the abort just seems a bit
 * messy (exit would probably be better.)
 *
 * Couple of notes:  We assume that the faces are in a continous block.
 * This works fine for now, but this could perhaps change in the future
 *
 * Function largely rewritten May 2000 to be more general purpose.
 * The server itself does not care what the image data is - to the server,
 * it is just data it needs to allocate.  As such, the code is written
 * to do such.
 */

void
read_client_images (void)
{
  char filename[400];
  char buf[HUGE_BUF];
  char *cp, *cps[7];
  FILE *infile;
  int num, len, compressed, fileno, i, badline;

  memset (facesets, 0, sizeof (facesets));
  sprintf (filename, "%s/image_info", settings.datadir);
  if ((infile = open_and_uncompress (filename, 0, &compressed)) == NULL)
    {
      LOG (llevError, "Unable to open %s\n", filename);
      abort ();
    }
  while (fgets (buf, HUGE_BUF - 1, infile) != NULL)
    {
      badline = 0;

      if (buf[0] == '#')
        continue;
      if (!(cps[0] = strtok (buf, ":")))
        badline = 1;
      for (i = 1; i < 7; i++)
        {
          if (!(cps[i] = strtok (NULL, ":")))
            badline = 1;
        }
      if (badline)
        {
          LOG (llevError, "Bad line in image_info file, ignoring line:\n  %s", buf);
        }
      else
        {
          len = atoi (cps[0]);
          if (len >= MAX_FACE_SETS)
            {
              LOG (llevError, "To high a setnum in image_info file: %d > %d\n", len, MAX_FACE_SETS);
              abort ();
            }
          facesets[len].prefix = strdup (cps[1]);
          facesets[len].fullname = strdup (cps[2]);
          facesets[len].fallback = atoi (cps[3]);
          facesets[len].size = strdup (cps[4]);
          facesets[len].extension = strdup (cps[5]);
          facesets[len].comment = strdup (cps[6]);
        }
    }
  close_and_delete (infile, compressed);
  for (i = 0; i < MAX_FACE_SETS; i++)
    {
      if (facesets[i].prefix)
        check_faceset_fallback (i, MAX_FACE_SETS);
    }
  /* Loaded the faceset information - now need to load up the
   * actual faces.
   */

  for (fileno = 0; fileno < MAX_FACE_SETS; fileno++)
    {
      /* if prefix is not set, this is not used */
      if (!facesets[fileno].prefix)
        continue;
      facesets[fileno].faces = (FaceInfo *) calloc (nrofpixmaps, sizeof (FaceInfo));

      sprintf (filename, "%s/crossfire.%d", settings.datadir, fileno);
      LOG (llevDebug, "Loading image file %s\n", filename);

      if ((infile = open_and_uncompress (filename, 0, &compressed)) == NULL)
        {
          LOG (llevError, "Unable to open %s\n", filename);
          abort ();
        }
      while (fgets (buf, HUGE_BUF - 1, infile) != NULL)
        {
          if (strncmp (buf, "IMAGE ", 6) != 0)
            {
              LOG (llevError, "read_client_images:Bad image line - not IMAGE, instead\n%s", buf);
              abort ();
            }
          num = atoi (buf + 6);
          if (num < 0 || num >= nrofpixmaps)
            {
              LOG (llevError, "read_client_images: Image num %d not in 0..%d\n%s", num, nrofpixmaps, buf);
              abort ();
            }
          /* Skip accross the number data */
          for (cp = buf + 6; *cp != ' '; cp++);
          len = atoi (cp);
          if (len == 0 || len > MAX_IMAGE_SIZE)
            {
              LOG (llevError, "read_client_images: length not valid: %d > %d \n%s", len, MAX_IMAGE_SIZE, buf);
              abort ();
            }
          /* We don't actualy care about the name of the image that
           * is embedded in the image file, so just ignore it.
           */
          facesets[fileno].faces[num].datalen = len;
          facesets[fileno].faces[num].data = (uint8 *) malloc (len);
          if ((i = fread (facesets[fileno].faces[num].data, len, 1, infile)) != 1)
            {
              LOG (llevError, "read_client_images: Did not read desired amount of data, wanted %d, got %d\n%s", len, i, buf);
              abort ();
            }
          facesets[fileno].faces[num].checksum = 0;
          for (i = 0; i < len; i++)
            {
              ROTATE_RIGHT (facesets[fileno].faces[num].checksum);
              facesets[fileno].faces[num].checksum += facesets[fileno].faces[num].data[i];
              facesets[fileno].faces[num].checksum &= 0xffffffff;
            }
        }
      close_and_delete (infile, compressed);
    }                           /* For fileno < MAX_FACE_SETS */
}

/**
 * Client tells us what type of faces it wants.  Also sets
 * the caching attribute.
 *
 */

void
SetFaceMode (char *buf, int len, client *ns)
{
  int mask = (atoi (buf) & CF_FACE_CACHE), mode = (atoi (buf) & ~CF_FACE_CACHE);

  if (mode == CF_FACE_NONE)
    ns->facecache = 1;
  else if (mode != CF_FACE_PNG)
    ns->send_packet_printf ("drawinfo %d %s", NDI_RED, "Warning - send unsupported face mode.  Will use Png");

  if (mask)
    ns->facecache = 1;
}

/**
 * Client has requested pixmap that it somehow missed getting.
 * This will be called often if the client is
 * caching images.
 */

void
SendFaceCmd (char *buff, int len, client * ns)
{
  long tmpnum = atoi (buff);
  short facenum = tmpnum & 0xffff;

  if (facenum != 0)
    esrv_send_face (ns, facenum, 1);
}

/**
 * Sends a face to a client if they are in pixmap mode
 * nothing gets sent in bitmap mode. 
 * If nocache is true (nonzero), ignore the cache setting from the client -
 * this is needed for the askface, in which we really do want to send the
 * face (and askface is the only place that should be setting it).  Otherwise,
 * we look at the facecache, and if set, send the image name.
 */

void
esrv_send_face (client *ns, short face_num, int nocache)
{
  char fallback;

  if (face_num <= 0 || face_num >= nrofpixmaps)
    {
      LOG (llevError, "esrv_send_face (%d) out of bounds??\n", face_num);
      return;
    }

  packet sl;
  fallback = get_face_fallback (ns->faceset, face_num);

  if (facesets[fallback].faces[face_num].data == NULL)
    {
      LOG (llevError, "esrv_send_face: faces[%d].data == NULL\n", face_num);
      return;
    }

  if (ns->facecache && !nocache)
    {
      sl << (ns->image2 ? "face2 " : "face1 ")
         << uint16 (face_num);

      if (ns->image2)
        sl << uint8 (fallback);

      sl << uint32 (facesets[fallback].faces[face_num].checksum)
         << new_faces[face_num].name;

      ns->send_packet (sl);
    }
  else
    {
      sl << (ns->image2 ? "image2 " : "image ")
         << uint32 (face_num);

      if (ns->image2)
        sl << uint8 (fallback);

      sl << uint32 (facesets[fallback].faces[face_num].datalen)
         << data (facesets[fallback].faces[face_num].data, facesets[fallback].faces[face_num].datalen);

      ns->send_packet (sl);
    }

  ns->faces_sent[face_num] |= NS_FACESENT_FACE;
}

/**
 * Sends the number of images, checksum of the face file,
 * and the image_info file information.  See the doc/Developers/protocol
 * if you want further detail.
 */

void
send_image_info (client * ns, char *params)
{
  packet sl;

  sl.printf ("replyinfo image_info\n%d\n%d\n", nrofpixmaps - 1, bmaps_checksum);

  for (int i = 0; i < MAX_FACE_SETS; i++)
    if (facesets[i].prefix)
      sl.printf ("%d:%s:%s:%d:%s:%s:%s",
                 i, facesets[i].prefix, facesets[i].fullname, facesets[i].fallback,
                 facesets[i].size, facesets[i].extension, facesets[i].comment);

  ns->send_packet (sl);
}

/**
 * Sends requested face information.
 * \param ns socket to send to
 * \param params contains first and last index of face
 *
 * For each image in [start..stop] sends
 *  - checksum
 *  - name
 */
void
send_image_sums (client * ns, char *params)
{
  int start, stop;
  char *cp, buf[MAX_BUF];

  packet sl;

  start = atoi (params);
  for (cp = params; *cp != '\0'; cp++)
    if (*cp == ' ')
      break;

  stop = atoi (cp);
  if (stop < start || *cp == '\0' || (stop - start) > 1000 || stop >= nrofpixmaps)
    {
      sl.printf ("replyinfo image_sums %d %d", start, stop);
      ns->send_packet (sl);
      sl.reset ();
      return;
    }

  sl.printf ("replyinfo image_sums %d %d ", start, stop);

  for (int i = start; i <= stop; i++)
    {
      ns->faces_sent[i] |= NS_FACESENT_FACE;

      int qq = get_face_fallback (ns->faceset, i);

      sl << uint16 (i)
         << uint32 (facesets[qq].faces[i].checksum)
         << uint8  (qq)
         << data8  (&new_faces[i].name, new_faces[i].name.length () + 1);
    }

  /* It would make more sense to catch this pre-emptively in the code above.
   * however, if this really happens, we probably just want to cut down the
   * size to less than 1000, since that is what we claim the protocol would
   * support.
   */
  if (sl.length () >= MAXSOCKBUF)
    {
      LOG (llevError, "send_image_send: buffer overrun, %d > %d\n", sl.length (), MAXSOCKBUF);
      abort ();
    }

  ns->send_packet (sl);
}

Revision:	1.14
Committed:	Sat Dec 16 03:08:26 2006 UTC (17 years, 6 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.13:	+1 -5 lines
Log Message:	- socket i/o is completely asynchronous now - some command sare handled immediately - others (most palying related commands) are queued for later (as of now synchronous) processing - specifying a max queue length (in seconds) is possible, but disabled - also add some syntax sugar for network code
#	User	Rev	Content
1	elmex	1.1	/*
2			CrossFire, A Multiplayer game for X-windows
3
4			Copyright (C) 2001 Mark Wedel
5			Copyright (C) 1992 Frank Tore Johansen
6
7			This program is free software; you can redistribute it and/or modify
8			it under the terms of the GNU General Public License as published by
9			the Free Software Foundation; either version 2 of the License, or
10			(at your option) any later version.
11
12			This program is distributed in the hope that it will be useful,
13			but WITHOUT ANY WARRANTY; without even the implied warranty of
14			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15			GNU General Public License for more details.
16
17			You should have received a copy of the GNU General Public License
18			along with this program; if not, write to the Free Software
19			Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20
21	root	1.4	The author can be reached via e-mail to <crossfire@schmorp.de>
22	elmex	1.1	*/
23
24			/** \file
25			* Image related communication
26			*
27			* \date 2003-12-02
28			*
29			* This file deals with the image related communication to the
30			* client. I've located all the functions in this file - this
31			* localizes it more, and means that we don't need to declare
32			* things like all the structures as globals.
33			*/
34
35			#include <global.h>
36			#include <sproto.h>
37
38			#define MAX_FACE_SETS 20 /*< Maximum number of image sets the program will handle /
39
40			/** Information about one image */
41	root	1.3	typedef struct FaceInfo
42			{
43
44			uint8 data; /< image data /
45			uint16 datalen; /*< length of the xpm data /
46			uint32 checksum; /*< Checksum of face data /
47	elmex	1.1	} FaceInfo;
48
49			/** Information about one face set */
50	root	1.3	typedef struct
51			{
52
53			char prefix; /< /
54			char *fullname;
55
56			uint8 fallback; /*< faceset to use when an image is not found in this faceset /
57			char *size;
58			char *extension;
59			char *comment;
60
61			FaceInfo faces; /< images in this faceset /
62	elmex	1.1	} FaceSets;
63
64			static FaceSets facesets[MAX_FACE_SETS]; /*< All facesets /
65
66			/**
67			* Checks specified faceset is valid
68			* \param fsn faceset number
69			*/
70	root	1.3	int
71			is_valid_faceset (int fsn)
72	elmex	1.1	{
73	root	1.3	if (fsn >= 0 && fsn < MAX_FACE_SETS && facesets[fsn].prefix)
74			return TRUE;
75			return FALSE;
76	elmex	1.1	}
77
78			/**
79			* Frees all faceset information
80			*/
81	root	1.3	void
82			free_socket_images (void)
83	elmex	1.1	{
84	root	1.3	int num, q;
85	elmex	1.1
86	root	1.3	for (num = 0; num < MAX_FACE_SETS; num++)
87			{
88			if (facesets[num].prefix)
89			{
90			for (q = 0; q < nrofpixmaps; q++)
91			if (facesets[num].faces[q].data)
92			free (facesets[num].faces[q].data);
93			free (facesets[num].prefix);
94			free (facesets[num].fullname);
95			free (facesets[num].size);
96			free (facesets[num].extension);
97			free (facesets[num].comment);
98			free (facesets[num].faces);
99	root	1.2	}
100	elmex	1.1	}
101			}
102
103			/**
104			* This returns the set we will actually use when sending
105			* a face. This is used because the image files may be sparse.
106			* This function is recursive. imageno is the face number we are
107			* trying to send
108			*
109			* If face is not found in specified faceset, tries with 'fallback' faceset.
110			*
111			* \param faceset faceset to check
112			* \param imageno image number
113			*
114			*/
115	root	1.3	static int
116			get_face_fallback (int faceset, int imageno)
117	elmex	1.1	{
118	root	1.3	/* faceset 0 is supposed to have every image, so just return. Doing
119			* so also prevents infinite loops in the case if it not having
120			* the face, but in that case, we are likely to crash when we try
121			* to access the data, but that is probably preferable to an infinite
122			* loop.
123			*/
124			if (faceset == 0)
125			return 0;
126
127			if (!facesets[faceset].prefix)
128			{
129			LOG (llevError, "get_face_fallback called with unused set (%d)?\n", faceset);
130			return 0; /* use default set */
131			}
132			if (facesets[faceset].faces[imageno].data)
133			return faceset;
134			return get_face_fallback (facesets[faceset].fallback, imageno);
135	elmex	1.1	}
136
137			/**
138			* Checks fallback are correctly defined.
139			* This is a simple recursive function that makes sure the fallbacks
140			* are all proper (eg, the fall back to defined sets, and also
141			* eventually fall back to 0). At the top level, togo is set to MAX_FACE_SETS,
142			* if togo gets to zero, it means we have a loop.
143			* This is only run when we first load the facesets.
144			*/
145	root	1.3	static void
146			check_faceset_fallback (int faceset, int togo)
147	elmex	1.1	{
148	root	1.3	int fallback = facesets[faceset].fallback;
149	elmex	1.1
150	root	1.3	/* proper case - falls back to base set */
151			if (fallback == 0)
152			return;
153
154			if (!facesets[fallback].prefix)
155			{
156			LOG (llevError, "Face set %d falls to non set faceset %d\n", faceset, fallback);
157			abort ();
158			}
159			togo--;
160			if (togo == 0)
161			{
162			LOG (llevError, "Infinite loop found in facesets. aborting.\n");
163			abort ();
164	elmex	1.1	}
165	root	1.3	check_faceset_fallback (fallback, togo);
166	elmex	1.1	}
167
168			#define MAX_IMAGE_SIZE 10000
169
170			/**
171			* Loads all the image types into memory.
172			*
173			* This way, we can easily send them to the client. We should really do something
174			* better than abort on any errors - on the other hand, these are all fatal
175			* to the server (can't work around them), but the abort just seems a bit
176			* messy (exit would probably be better.)
177			*
178			* Couple of notes: We assume that the faces are in a continous block.
179			* This works fine for now, but this could perhaps change in the future
180			*
181			* Function largely rewritten May 2000 to be more general purpose.
182			* The server itself does not care what the image data is - to the server,
183			* it is just data it needs to allocate. As such, the code is written
184			* to do such.
185			*/
186
187	root	1.3	void
188			read_client_images (void)
189	elmex	1.1	{
190	root	1.3	char filename[400];
191			char buf[HUGE_BUF];
192			char cp, cps[7];
193			FILE *infile;
194			int num, len, compressed, fileno, i, badline;
195
196			memset (facesets, 0, sizeof (facesets));
197			sprintf (filename, "%s/image_info", settings.datadir);
198			if ((infile = open_and_uncompress (filename, 0, &compressed)) == NULL)
199			{
200			LOG (llevError, "Unable to open %s\n", filename);
201			abort ();
202			}
203			while (fgets (buf, HUGE_BUF - 1, infile) != NULL)
204			{
205			badline = 0;
206
207			if (buf[0] == '#')
208			continue;
209			if (!(cps[0] = strtok (buf, ":")))
210			badline = 1;
211			for (i = 1; i < 7; i++)
212			{
213			if (!(cps[i] = strtok (NULL, ":")))
214			badline = 1;
215			}
216			if (badline)
217			{
218			LOG (llevError, "Bad line in image_info file, ignoring line:\n %s", buf);
219	root	1.2	}
220	root	1.3	else
221			{
222			len = atoi (cps[0]);
223			if (len >= MAX_FACE_SETS)
224			{
225			LOG (llevError, "To high a setnum in image_info file: %d > %d\n", len, MAX_FACE_SETS);
226			abort ();
227	root	1.2	}
228	root	1.12	facesets[len].prefix = strdup (cps[1]);
229			facesets[len].fullname = strdup (cps[2]);
230	root	1.3	facesets[len].fallback = atoi (cps[3]);
231	root	1.12	facesets[len].size = strdup (cps[4]);
232			facesets[len].extension = strdup (cps[5]);
233			facesets[len].comment = strdup (cps[6]);
234	root	1.2	}
235	elmex	1.1	}
236	root	1.3	close_and_delete (infile, compressed);
237			for (i = 0; i < MAX_FACE_SETS; i++)
238			{
239			if (facesets[i].prefix)
240			check_faceset_fallback (i, MAX_FACE_SETS);
241			}
242			/* Loaded the faceset information - now need to load up the
243			* actual faces.
244			*/
245
246			for (fileno = 0; fileno < MAX_FACE_SETS; fileno++)
247			{
248			/* if prefix is not set, this is not used */
249			if (!facesets[fileno].prefix)
250			continue;
251			facesets[fileno].faces = (FaceInfo *) calloc (nrofpixmaps, sizeof (FaceInfo));
252
253			sprintf (filename, "%s/crossfire.%d", settings.datadir, fileno);
254			LOG (llevDebug, "Loading image file %s\n", filename);
255
256			if ((infile = open_and_uncompress (filename, 0, &compressed)) == NULL)
257			{
258			LOG (llevError, "Unable to open %s\n", filename);
259			abort ();
260	root	1.2	}
261	root	1.3	while (fgets (buf, HUGE_BUF - 1, infile) != NULL)
262			{
263			if (strncmp (buf, "IMAGE ", 6) != 0)
264			{
265			LOG (llevError, "read_client_images:Bad image line - not IMAGE, instead\n%s", buf);
266			abort ();
267	root	1.2	}
268	root	1.3	num = atoi (buf + 6);
269			if (num < 0 \|\| num >= nrofpixmaps)
270			{
271			LOG (llevError, "read_client_images: Image num %d not in 0..%d\n%s", num, nrofpixmaps, buf);
272			abort ();
273	root	1.2	}
274	root	1.3	/* Skip accross the number data */
275			for (cp = buf + 6; *cp != ' '; cp++);
276			len = atoi (cp);
277			if (len == 0 \|\| len > MAX_IMAGE_SIZE)
278			{
279			LOG (llevError, "read_client_images: length not valid: %d > %d \n%s", len, MAX_IMAGE_SIZE, buf);
280			abort ();
281	root	1.2	}
282	root	1.5	/* We don't actualy care about the name of the image that
283	root	1.3	* is embedded in the image file, so just ignore it.
284			*/
285			facesets[fileno].faces[num].datalen = len;
286			facesets[fileno].faces[num].data = (uint8 *) malloc (len);
287			if ((i = fread (facesets[fileno].faces[num].data, len, 1, infile)) != 1)
288			{
289			LOG (llevError, "read_client_images: Did not read desired amount of data, wanted %d, got %d\n%s", len, i, buf);
290			abort ();
291	root	1.2	}
292	root	1.3	facesets[fileno].faces[num].checksum = 0;
293			for (i = 0; i < len; i++)
294			{
295			ROTATE_RIGHT (facesets[fileno].faces[num].checksum);
296			facesets[fileno].faces[num].checksum += facesets[fileno].faces[num].data[i];
297			facesets[fileno].faces[num].checksum &= 0xffffffff;
298	root	1.2	}
299			}
300	root	1.3	close_and_delete (infile, compressed);
301			} /* For fileno < MAX_FACE_SETS */
302	elmex	1.1	}
303
304			/**
305			* Client tells us what type of faces it wants. Also sets
306			* the caching attribute.
307			*
308			*/
309
310	root	1.3	void
311	root	1.13	SetFaceMode (char buf, int len, client ns)
312	elmex	1.1	{
313	root	1.3	int mask = (atoi (buf) & CF_FACE_CACHE), mode = (atoi (buf) & ~CF_FACE_CACHE);
314	elmex	1.1
315	root	1.3	if (mode == CF_FACE_NONE)
316	root	1.7	ns->facecache = 1;
317	root	1.3	else if (mode != CF_FACE_PNG)
318	root	1.14	ns->send_packet_printf ("drawinfo %d %s", NDI_RED, "Warning - send unsupported face mode. Will use Png");
319	root	1.7
320	root	1.3	if (mask)
321	root	1.7	ns->facecache = 1;
322	elmex	1.1	}
323
324			/**
325			* Client has requested pixmap that it somehow missed getting.
326			* This will be called often if the client is
327			* caching images.
328			*/
329
330	root	1.3	void
331	root	1.13	SendFaceCmd (char buff, int len, client ns)
332	elmex	1.1	{
333	root	1.3	long tmpnum = atoi (buff);
334			short facenum = tmpnum & 0xffff;
335	elmex	1.1
336	root	1.3	if (facenum != 0)
337			esrv_send_face (ns, facenum, 1);
338	elmex	1.1	}
339
340			/**
341			* Sends a face to a client if they are in pixmap mode
342			* nothing gets sent in bitmap mode.
343			* If nocache is true (nonzero), ignore the cache setting from the client -
344			* this is needed for the askface, in which we really do want to send the
345			* face (and askface is the only place that should be setting it). Otherwise,
346			* we look at the facecache, and if set, send the image name.
347			*/
348
349	root	1.3	void
350	root	1.13	esrv_send_face (client *ns, short face_num, int nocache)
351	elmex	1.1	{
352	root	1.3	char fallback;
353	elmex	1.1
354	root	1.3	if (face_num <= 0 \|\| face_num >= nrofpixmaps)
355			{
356			LOG (llevError, "esrv_send_face (%d) out of bounds??\n", face_num);
357			return;
358			}
359
360	root	1.8	packet sl;
361	root	1.3	fallback = get_face_fallback (ns->faceset, face_num);
362
363			if (facesets[fallback].faces[face_num].data == NULL)
364			{
365			LOG (llevError, "esrv_send_face: faces[%d].data == NULL\n", face_num);
366			return;
367			}
368
369			if (ns->facecache && !nocache)
370			{
371	root	1.6	sl << (ns->image2 ? "face2 " : "face1 ")
372			<< uint16 (face_num);
373
374	root	1.3	if (ns->image2)
375	root	1.6	sl << uint8 (fallback);
376
377			sl << uint32 (facesets[fallback].faces[face_num].checksum)
378			<< new_faces[face_num].name;
379	root	1.3
380	root	1.11	ns->send_packet (sl);
381	root	1.3	}
382			else
383			{
384	root	1.6	sl << (ns->image2 ? "image2 " : "image ")
385			<< uint32 (face_num);
386
387	root	1.3	if (ns->image2)
388	root	1.6	sl << uint8 (fallback);
389
390			sl << uint32 (facesets[fallback].faces[face_num].datalen)
391			<< data (facesets[fallback].faces[face_num].data, facesets[fallback].faces[face_num].datalen);
392
393	root	1.11	ns->send_packet (sl);
394	elmex	1.1	}
395	root	1.6
396	root	1.3	ns->faces_sent[face_num] \|= NS_FACESENT_FACE;
397	elmex	1.1	}
398
399			/**
400			* Sends the number of images, checksum of the face file,
401			* and the image_info file information. See the doc/Developers/protocol
402			* if you want further detail.
403			*/
404
405	root	1.3	void
406	root	1.13	send_image_info (client * ns, char *params)
407	elmex	1.1	{
408	root	1.8	packet sl;
409	elmex	1.1
410	root	1.6	sl.printf ("replyinfo image_info\n%d\n%d\n", nrofpixmaps - 1, bmaps_checksum);
411
412			for (int i = 0; i < MAX_FACE_SETS; i++)
413			if (facesets[i].prefix)
414			sl.printf ("%d:%s:%s:%d:%s:%s:%s",
415			i, facesets[i].prefix, facesets[i].fullname, facesets[i].fallback,
416			facesets[i].size, facesets[i].extension, facesets[i].comment);
417	elmex	1.1
418	root	1.11	ns->send_packet (sl);
419	elmex	1.1	}
420
421			/**
422			* Sends requested face information.
423			* \param ns socket to send to
424			* \param params contains first and last index of face
425			*
426			* For each image in [start..stop] sends
427			* - checksum
428			* - name
429			*/
430	root	1.3	void
431	root	1.13	send_image_sums (client * ns, char *params)
432	elmex	1.1	{
433	root	1.3	int start, stop;
434			char *cp, buf[MAX_BUF];
435
436	root	1.8	packet sl;
437	root	1.3
438			start = atoi (params);
439			for (cp = params; *cp != '\0'; cp++)
440			if (*cp == ' ')
441			break;
442
443			stop = atoi (cp);
444			if (stop < start \|\| *cp == '\0' \|\| (stop - start) > 1000 \|\| stop >= nrofpixmaps)
445			{
446	root	1.7	sl.printf ("replyinfo image_sums %d %d", start, stop);
447			ns->send_packet (sl);
448			sl.reset ();
449	root	1.3	return;
450			}
451
452	root	1.6	sl.printf ("replyinfo image_sums %d %d ", start, stop);
453	root	1.3
454	root	1.6	for (int i = start; i <= stop; i++)
455	root	1.3	{
456			ns->faces_sent[i] \|= NS_FACESENT_FACE;
457
458	root	1.6	int qq = get_face_fallback (ns->faceset, i);
459
460			sl << uint16 (i)
461			<< uint32 (facesets[qq].faces[i].checksum)
462			<< uint8 (qq)
463			<< data8 (&new_faces[i].name, new_faces[i].name.length () + 1);
464	root	1.3	}
465	root	1.6
466	root	1.3	/* It would make more sense to catch this pre-emptively in the code above.
467			* however, if this really happens, we probably just want to cut down the
468			* size to less than 1000, since that is what we claim the protocol would
469			* support.
470			*/
471	root	1.9	if (sl.length () >= MAXSOCKBUF)
472	root	1.3	{
473	root	1.9	LOG (llevError, "send_image_send: buffer overrun, %d > %d\n", sl.length (), MAXSOCKBUF);
474	root	1.3	abort ();
475	elmex	1.1	}
476	root	1.6
477	root	1.11	ns->send_packet (sl);
478	elmex	1.1	}
479	root	1.6